70 MR. W. MITTEN ON THE MOSSES OF 
D. Tasmanicus (Tridontium, Hook. fil.). 
Hab. Tasmania, fossiliferous limestone, Meander River, Mr. Archer. 
D. papillatus, Hook. fil. et Wils. 
Hab. Tasmania, the Hummocks, Mr. Archer. 
D. cyathicarpus (Zygodon, Mont.). 
Hab. Tasmania, Cheshunt, Mr. Archer. 
This and the allied European species, D. Lapponicus and D. Mou- 
geotii, referred to Zygodon, and more recently, by M. Schimper, pro- 
posed as distinct, under the name of Amphidium, scarcely differ from 
Rhabdoweissia, except in the absence of a peristome; and Rhabdo- 
weissia itself is not generically separable from Didymodon. 
8. HorowiTRIUM, Brid. 
H. cirrhatum (Weissia, Hedw.). 
Hab. Tasmania, Cheshunt, Mr. Archer. 
Like those specimens collected in Victoria, Australia, by Dr. F. 
Müller, but, except in being rather more slender, not different from 
European specimens. 
ПІ. LEUCOBRYACEE. 
1. Levcospryum, Hampe. 
L. candidum, Dill. 
Hab. Tasmania, Cheshunt, Mr. Archer. 
IV. TricHosTtoMACcEz. 
1. Astomum, Hampe. 
A. cylindricum (Phascum, Taylor). 
Hab. Tasmania, Cheshunt, Mr. Archer. 
2. Weissta, Hedw. 
W. controversa, Hedw. 
Hab. Tasmania, Port Sorrell, Long Hill, and Cheshunt, Mr. Archer. 
3. TonrULA, Hedw. 
T. Australasie, Hook. et Grev. - M 
Hab. Tasmania, west side of Cataract, Launceston, Mr. Archer. 
T. torquata, Taylor. Е 
Hab. Tasmania, Doublegate Park, Mr. Archer. 
T. calycina, Schw. 
Hab. Tasmania, Port Lovell, Mr. Archer. 
